Improved cab-axle box



T. B. STEWART.

V Car-Axl Bok. I No. 71.241. Patented Nov. 19, I867.

. Inventor, Witnesses= v 6 4164/2 AM- PHOTO-LITHQCQNN. (OSBDRNE'S PROCESS.)

@nitzb tetra strut @ffirr T. B. STEWART, 0F WETHERSFIELD, CONNECTICUT. Letters Patent No. 71,241, dated November 19, 1867.

IMPROVED GAR-*AXLE BOX.

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TO ALL WHOM IT MAY CONCERN Be it known that I, T. B. STEWART, of Wethersfield, Hartford county, Connecticut, have invented a new and useful improved Journal-Box for Car-Axles; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the lctters'of reference marked thereon. In the drawings- I Figure 1 is a sectional view of my improvement, and

Figures 2 and 3 detailed views of parts of the same.

The object of my improvement is to save the journals and boxes of car-axles as much as possible from wear, by preventing the dirt and dust outside from getting into the boxes and grinding between the bearings: I accomplish this by a peculiar 'form of-box and car-wheel, which I will now describe.

Upon the side of the box A next the wheel is formed a cylindrical projection, 13, having a flange, a, at its edge. This fits into a similar tubular projection, C, upon the wheel D, which also has a flange, b, upon its edge, this flange 6, however, projecting toward the centre, while the one, a, on the tube 13 radiates. The outside surface of the tube 13 is elliptical in shape, for a purpose hereafter described, so that a point on each side at, e e, is

flush with the outside edge of the flange a. i It will be seen in fig. 1 that dust would have to pass around a very.

circuitous route before it could penetrate in far enough to reach the bearings of the journal'- The saddles of the bearing I construct in a peculiar manner, so that they are easily adjusted in the boxes, and when two or more are fitted together, they form a solid bearing.

In fig. 2 is shown an end view of. the journal E and the saddles ff, with the box A. The saddles ff are formed in the shape of crescents, having their outside surfaceslot' the saine circular planes as their inside, so that they fit compactly one upon another. In order to secure them from slipping, upon each outside surface, at the top, are tenons g 9, &c., which fit into corresponding cavities h h h, &c., on the inside surface. These tenons g g g preventalso the whole combined saddle from moving in the box, as cavities maybe sunk in the top of the-same for the upper outside teuons to fit into. In fig. 1 the centre tenon is shown fitting into a cavity, 70, while the two end ones form rests on each side of the socket G having the cavity: The tube B isformed elliptical, in order to allow the same to be moved up in the tube 0 when the saddles are being adjusted above the journal.

By means of this device I obtain a. completely protected box, no dust being allowed to outer, thereby saving much wear to both journal and'saddles, while the latter by their construction are more perfect of operation and wear.

Now, having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination of the tubes B and C with flanges a and b, arranged upon the box and wheel, substantially as herein shown. I

2. The crescent-shaped saddlesf, having tenons g g 9 upon their outer surfaces, and cavities h It h ontheir inner surfaces, arranged substantially as shown. I I

T. B. STEWART.

Witnesses:

J. B. GARDINER, E. S. Smcr. 

